High Accuracy

Systems

690A And 698A SEnSOrS

670B SignAl COndiTiOnEr

capacitance diaphragm sensor technology and solid state electronics with the features

demanded by today’s process and metrology engineers to make precision pressure

measurement easy – whether on the production line or in the research or metrology

laboratory. If your principal concern is accurate pressure measurement, or you need to

measure pressure over a very wide range, the High Accuracy Systems are ideal solutions.

Long considered standards of pressure measurement in both industry and research, high

accuracy Baratron systems are completely modular with a full selection of pressure ranges,

levels of accuracy, options, and accessories that ensure there is a system exactly right for

your application.

690A/698A

Features & Benefits

• Excellentthermalstabilitydueto

extremely low temperature coefficients

• Highestaccuracypressuremeasurement

instruments available

• Designedforusewith670BSignal

Conditioner

• IdealforcalibrationTransferStandards

• Sixdecadesofmeasurementoften

eliminates several transducers with limited

resolution

690A Absolute

698A Differential

All high-accuracy sensors are single-ended

dual-electrode/AC bridge devices that are

extremely stable and designed to minimize

the effect of temperature changes. They

measure pressure from 25,000 mmHg

ranging from 0.25% to 0.05% of Reading.

Models are available in absolute and

differential configurations, and bakeable

versions are offered for use in ultrahigh

vacuum or high temperature applications.

stainless steel, allowing use with many wet,

dirty, or corrosive gases. The 690 and 698

are designed for high accuracy pressure

measurements in process or metrology

environments. By incorporating temperature

control into the head, the accuracy is

improved to as high as 0.05% of Rdg. The

690 absolute and 698 differential operate at

45°C.